{% if site.favicon %}
<link rel="shortcut icon" href="{{ site.favicon }}" />
<link rel="bookmark" href="{{ site.favicon }}" type="image/x-icon" />
{% else %}
  {% assign image_files = site.static_files | where: "image", true %}
  {% for image in image_files %}
    {% if image.basename == 'favicon' %}
    <link rel="shortcut icon" href="{{ image.path }}" />
    <link rel="bookmark" href="{{ image.path }}" type="image/x-icon" />
    {% endif %}
  {% endfor %}
{% endif %}
